https://wccftech.com/iphone-12-uses-qualcomm-snapdragon-x55-5g-modem/

There were rumors detailing the use of the advanced Snapdragon X60 5G modem in the iPhone 12 lineup, with TSMC said to be taking the orders. The modem would be made on the manufacturer’s 5nm node, resulting in improved efficiency and more peak data throughput. Unfortunately, it was not to be and if you look at the state of 5G, it’s not a big deal at all that all iPhone 12 models are using the Snapdragon X55 instead.

A number of clips circulating Twitter are showing off the logic board belonging to the iPhone 12 and one of the components is revealed to be the Snapdragon X55, not the Snapdragon X60. One reason why the iPhone 12 range doesn’t feature the Snapdragon X60 5G modem is that a previous report mentioned that Qualcomm will mass produce the baseband chip and related components for its smartphone partners from 2021.